How to Get a Warm Homes Grant for a Bathroom in 2026
The 2026 Warm Homes Plan is an energy-efficiency scheme, not a bathroom renovation scheme — so a Warm Homes grant for a bathroom only funds the energy-related work in that room. That can still be £1,500–£6,000 of free or part-subsidised work: insulation, ventilation upgrades, hot-water cylinder replacement, low-energy lighting and — in some cases — part-funded shower-room conversion linked to a wider whole-house energy upgrade. This is the step-by-step UK 2026 path to actually getting that money applied to your bathroom project.
What a 2026 Warm Homes Grant Actually Covers In a Bathroom
The grant funds energy-efficiency measures, not aesthetic or sanitary upgrades. These are the bathroom-relevant works that qualify under the 2026 Warm Homes Plan when packaged with a whole-house assessment:
External and cavity wall insulation
If the bathroom is on an external wall, EWI or CWI is a high-impact measure that's nearly always grant-funded. Typical bathroom contribution £800–£2,200.
Mechanical heat-recovery ventilation
MVHR or single-room dMEV units that reduce humidity without losing heat. Grant covers £400–£1,200 per bathroom for retrofit installation.
Heated towel rail / low-temperature radiator
Replacing oversized panel radiators with low-flow-temperature units sized for a future heat pump. Grant covers £220–£450 fitted per radiator.
Hot-water cylinder & insulation
A new pre-insulated unvented cylinder serving the bathroom hot-water demand. Grant covers £1,200–£2,800 of cylinder + pipework lagging.
Low-flow taps, showers, tap aerators
Water and heat-saving fittings; usually bundled into the wider upgrade. £80–£260 of grant-funded fittings per bathroom.
LED lighting retrofit
Replacing halogen downlights with sealed IP-rated LED fittings. £140–£360 per bathroom typically covered.
What's Explicitly Not Covered
A common misunderstanding is that “Warm Homes grant for a bathroom” means a free new bathroom. It doesn't. These items are not grant-funded and must be paid privately:
- The bath, basin, WC, shower enclosure, tiling and decorative finishes
- Floor tiles, wall tiles, splashbacks, vanity units, mirrors
- Aesthetic upgrades (re-tiling, repainting, replacing a working suite)
- The “second fix” cosmetic plumbing labour separate from energy works
- Wet-room conversion unless it's medically necessary and assessed via the Disabled Facilities Grant (separate scheme, up to £30k means-tested)
Do You Qualify For a 2026 Warm Homes Grant?
| Test | 2026 Warm Homes threshold |
|---|---|
| Property EPC rating | D or below (E–G priority) |
| Tenure | Owner-occupier, private rented (landlord application), social housing |
| Household income (means-tested route) | Under £36,000 OR receipt of qualifying benefit |
| Property location | All four UK nations (eligibility windows vary by region) |
| Council tax band (general route) | A–D primary; E–G available with energy assessment |
If you fail the means-tested route, you can still access the general route, which part-funds works — typically 30–60% of the eligible energy measures — if your EPC is E or below.
How To Apply: 7 Steps
- Book a free Retrofit Assessment. Apply through GOV.UK / Warm Homes (England), Home Energy Scotland, Nest Cymru (Wales), or NIE (NI). They send a TrustMark-certified Retrofit Assessor to survey the whole house, not just the bathroom.
- Receive your Medium Term Improvement Plan (MTIP). The assessor's report ranks measures by carbon impact and cost. Bathroom-linked items (insulation, ventilation, cylinder) usually appear in the top half.
- Get matched with a TrustMark contractor. The scheme matches you with vetted installers. You can bring your own builder for the non-grant bathroom works, but the energy measures must be installed by a TrustMark/PAS 2030 contractor.
- Sign the funding agreement. The grant value is fixed at signing. Any uplifts you choose (e.g. premium tiling around new MVHR ducting) are paid privately by you direct to the bathroom fitter.
- Coordinate with your bathroom installer. Critical step: the energy works (insulation, cylinder, MVHR, low-temp rad) must happen before tile/finish work. The grant contractor and your private bathroom fitter must agree a sequence.
- Installation. Energy measures complete first, typically 3–7 days. Bathroom fit-out (tiles, suite, decorations) follows on, usually 1–3 weeks.
- Quality assurance & sign-off. The Warm Homes scheme funds an independent inspection of the energy works. You sign off; grant funds release direct to the energy contractor; you settle the private bathroom invoice with your fitter.